| author | Sam Lantinga <slouken@libsdl.org> |
| Tue, 01 Feb 2011 19:19:43 -0800 | |
| changeset 5147 | ad50b3db78bd |
| parent 5140 | e743b9c3f6d6 |
| child 5184 | d976b67150c5 |
| permissions | -rw-r--r-- |
| 2901 | 1 |
|
2 |
/* Simple program: draw as many random objects on the screen as possible */ |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <time.h> |
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#include "common.h" |
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9 |
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#define NUM_OBJECTS 100 |
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static CommonState *state; |
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static int num_objects; |
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static SDL_bool cycle_color; |
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static SDL_bool cycle_alpha; |
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static int cycle_direction = 1; |
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static int current_alpha = 255; |
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static int current_color = 255; |
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static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE; |
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void |
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
22 |
DrawPoints(SDL_Window * window, SDL_Renderer * renderer) |
| 2901 | 23 |
{
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int i; |
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int x, y; |
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int window_w, window_h; |
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/* Query the sizes */ |
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SDL_GetWindowSize(window, &window_w, &window_h); |
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2902
83c3a4b0e421
Fixed crash in testdraw2, added more points
Sam Lantinga <slouken@libsdl.org>
parents:
2901
diff
changeset
|
31 |
for (i = 0; i < num_objects * 4; ++i) {
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| 2901 | 32 |
/* Cycle the color and alpha, if desired */ |
33 |
if (cycle_color) {
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current_color += cycle_direction; |
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if (current_color < 0) {
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current_color = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_color > 255) {
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current_color = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
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if (cycle_alpha) {
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current_alpha += cycle_direction; |
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if (current_alpha < 0) {
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current_alpha = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_alpha > 255) {
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current_alpha = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
55 |
SDL_SetRenderDrawColor(renderer, 255, (Uint8) current_color, |
| 2901 | 56 |
(Uint8) current_color, (Uint8) current_alpha); |
57 |
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x = rand() % window_w; |
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y = rand() % window_h; |
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
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60 |
SDL_RenderDrawPoint(renderer, x, y); |
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} |
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} |
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64 |
void |
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
65 |
DrawLines(SDL_Window * window, SDL_Renderer * renderer) |
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{
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int i; |
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int x1, y1, x2, y2; |
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int window_w, window_h; |
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/* Query the sizes */ |
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SDL_GetWindowSize(window, &window_w, &window_h); |
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for (i = 0; i < num_objects; ++i) {
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/* Cycle the color and alpha, if desired */ |
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if (cycle_color) {
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current_color += cycle_direction; |
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if (current_color < 0) {
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current_color = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_color > 255) {
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current_color = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
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if (cycle_alpha) {
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current_alpha += cycle_direction; |
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if (current_alpha < 0) {
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current_alpha = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_alpha > 255) {
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current_alpha = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
|
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
98 |
SDL_SetRenderDrawColor(renderer, 255, (Uint8) current_color, |
| 2901 | 99 |
(Uint8) current_color, (Uint8) current_alpha); |
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if (i == 0) {
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
102 |
SDL_RenderDrawLine(renderer, 0, 0, window_w - 1, window_h - 1); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
103 |
SDL_RenderDrawLine(renderer, 0, window_h - 1, window_w - 1, 0); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
104 |
SDL_RenderDrawLine(renderer, 0, window_h / 2, window_w - 1, window_h / 2); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
105 |
SDL_RenderDrawLine(renderer, window_w / 2, 0, window_w / 2, window_h - 1); |
| 2901 | 106 |
} else {
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3546
65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
107 |
x1 = (rand() % (window_w*2)) - window_w; |
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65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
108 |
x2 = (rand() % (window_w*2)) - window_w; |
|
65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
109 |
y1 = (rand() % (window_h*2)) - window_h; |
|
65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
110 |
y2 = (rand() % (window_h*2)) - window_h; |
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
111 |
SDL_RenderDrawLine(renderer, x1, y1, x2, y2); |
| 2901 | 112 |
} |
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} |
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} |
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void |
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
117 |
DrawRects(SDL_Window * window, SDL_Renderer * renderer) |
| 2901 | 118 |
{
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int i; |
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SDL_Rect rect; |
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int window_w, window_h; |
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/* Query the sizes */ |
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SDL_GetWindowSize(window, &window_w, &window_h); |
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125 |
||
|
2902
83c3a4b0e421
Fixed crash in testdraw2, added more points
Sam Lantinga <slouken@libsdl.org>
parents:
2901
diff
changeset
|
126 |
for (i = 0; i < num_objects / 4; ++i) {
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| 2901 | 127 |
/* Cycle the color and alpha, if desired */ |
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if (cycle_color) {
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current_color += cycle_direction; |
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if (current_color < 0) {
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current_color = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_color > 255) {
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current_color = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
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if (cycle_alpha) {
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current_alpha += cycle_direction; |
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if (current_alpha < 0) {
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current_alpha = 0; |
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cycle_direction = -cycle_direction; |
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} |
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if (current_alpha > 255) {
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current_alpha = 255; |
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cycle_direction = -cycle_direction; |
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} |
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} |
|
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
150 |
SDL_SetRenderDrawColor(renderer, 255, (Uint8) current_color, |
| 2901 | 151 |
(Uint8) current_color, (Uint8) current_alpha); |
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rect.w = rand() % (window_h / 2); |
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rect.h = rand() % (window_h / 2); |
|
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3546
65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
155 |
rect.x = (rand() % (window_w*2) - window_w) - (rect.w / 2); |
|
65848493e08e
Allow points to be outside the window bounds, stress testing the clipping code.
Sam Lantinga <slouken@libsdl.org>
parents:
3536
diff
changeset
|
156 |
rect.y = (rand() % (window_h*2) - window_h) - (rect.h / 2); |
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
157 |
SDL_RenderFillRect(renderer, &rect); |
| 2901 | 158 |
} |
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} |
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int |
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main(int argc, char *argv[]) |
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{
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int i, done; |
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SDL_Event event; |
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Uint32 then, now, frames; |
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/* Initialize parameters */ |
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num_objects = NUM_OBJECTS; |
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/* Initialize test framework */ |
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state = CommonCreateState(argv, SDL_INIT_VIDEO); |
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if (!state) {
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return 1; |
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} |
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for (i = 1; i < argc;) {
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int consumed; |
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consumed = CommonArg(state, i); |
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if (consumed == 0) {
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consumed = -1; |
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if (SDL_strcasecmp(argv[i], "--blend") == 0) {
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if (argv[i + 1]) {
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if (SDL_strcasecmp(argv[i + 1], "none") == 0) {
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blendMode = SDL_BLENDMODE_NONE; |
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consumed = 2; |
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} else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) {
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blendMode = SDL_BLENDMODE_BLEND; |
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consumed = 2; |
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} else if (SDL_strcasecmp(argv[i + 1], "add") == 0) {
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blendMode = SDL_BLENDMODE_ADD; |
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consumed = 2; |
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} |
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} |
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} else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) {
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cycle_color = SDL_TRUE; |
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consumed = 1; |
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} else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
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cycle_alpha = SDL_TRUE; |
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consumed = 1; |
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} else if (SDL_isdigit(*argv[i])) {
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num_objects = SDL_atoi(argv[i]); |
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consumed = 1; |
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} |
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} |
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if (consumed < 0) {
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fprintf(stderr, |
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5140
e743b9c3f6d6
Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents:
4884
diff
changeset
|
208 |
"Usage: %s %s [--blend none|blend|add] [--cyclecolor] [--cyclealpha]\n", |
| 2901 | 209 |
argv[0], CommonUsage(state)); |
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return 1; |
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} |
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i += consumed; |
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} |
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if (!CommonInit(state)) {
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return 2; |
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} |
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/* Create the windows and initialize the renderers */ |
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for (i = 0; i < state->num_windows; ++i) {
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5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
220 |
SDL_Renderer *renderer = state->renderers[i]; |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
221 |
SDL_SetRenderDrawBlendMode(renderer, blendMode); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
222 |
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
223 |
SDL_RenderClear(renderer); |
| 2901 | 224 |
} |
225 |
||
|
4884
27ab20a36eba
- added directx include path to VS2008 solution
Andreas Schiffler <aschiffler@ferzkopp.net>
parents:
3685
diff
changeset
|
226 |
srand((unsigned int)time(NULL)); |
| 2901 | 227 |
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/* Main render loop */ |
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frames = 0; |
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then = SDL_GetTicks(); |
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done = 0; |
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while (!done) {
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/* Check for events */ |
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++frames; |
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while (SDL_PollEvent(&event)) {
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CommonEvent(state, &event, &done); |
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} |
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238 |
for (i = 0; i < state->num_windows; ++i) {
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|
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
239 |
SDL_Renderer *renderer = state->renderers[i]; |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
240 |
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
241 |
SDL_RenderClear(renderer); |
| 2901 | 242 |
|
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
243 |
DrawRects(state->windows[i], renderer); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
244 |
DrawLines(state->windows[i], renderer); |
|
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
245 |
DrawPoints(state->windows[i], renderer); |
| 2901 | 246 |
|
|
5147
ad50b3db78bd
The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents:
5140
diff
changeset
|
247 |
SDL_RenderPresent(renderer); |
| 2901 | 248 |
} |
249 |
} |
|
250 |
||
|
3371
438ba87e9578
Call CommonQuit() at exit has been added.
Mike Gorchak <lestat@i.com.ua>
parents:
2902
diff
changeset
|
251 |
CommonQuit(state); |
|
438ba87e9578
Call CommonQuit() at exit has been added.
Mike Gorchak <lestat@i.com.ua>
parents:
2902
diff
changeset
|
252 |
|
| 2901 | 253 |
/* Print out some timing information */ |
254 |
now = SDL_GetTicks(); |
|
255 |
if (now > then) {
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256 |
double fps = ((double) frames * 1000) / (now - then); |
|
257 |
printf("%2.2f frames per second\n", fps);
|
|
258 |
} |
|
259 |
return 0; |
|
260 |
} |
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261 |
||
262 |
/* vi: set ts=4 sw=4 expandtab: */ |