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Changed the concept of a render clip rect to a render viewport.

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The render viewport is automatically re-centered when the window changes size, so applications that don't care will not have to handle recalculating their rendering coordinates.

Fixed API for drawing and filling multiple rectangles - the parameter should be an array of rects, not an array of pointers to rects.

Fixed API for updating window rects for consistency with other APIs - the order is pointer to array followed by count in array.
This commit is contained in:
Sam Lantinga
2011-02-15 13:59:59 -08:00
parent 8c8191deef
commit b59da3ffdc
27 changed files with 652 additions and 443 deletions
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65
test/testintersections.c
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@@ -20,14 +20,14 @@ static int current_color = 255;
static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE;
void
DrawPoints(SDL_Window * window, SDL_Renderer * renderer)
DrawPoints(SDL_Renderer * renderer)
{
int i;
int x, y;
int window_w, window_h;
SDL_Rect viewport;
/* Query the sizes */
SDL_GetWindowSize(window, &window_w, &window_h);
SDL_RenderGetViewport(renderer, &viewport);
for (i = 0; i < num_objects * 4; ++i) {
/* Cycle the color and alpha, if desired */
@@ -56,8 +56,8 @@ DrawPoints(SDL_Window * window, SDL_Renderer * renderer)
SDL_SetRenderDrawColor(renderer, 255, (Uint8) current_color,
(Uint8) current_color, (Uint8) current_alpha);
x = rand() % window_w;
y = rand() % window_h;
x = rand() % viewport.w;
y = rand() % viewport.h;
SDL_RenderDrawPoint(renderer, x, y);
}
}
@@ -84,23 +84,23 @@ add_line(int x1, int y1, int x2, int y2)
void
DrawLines(SDL_Window * window, SDL_Renderer * renderer)
DrawLines(SDL_Renderer * renderer)
{
int i;
int x1, y1, x2, y2;
int window_w, window_h;
SDL_Rect viewport;
/* Query the sizes */
SDL_GetWindowSize(window, &window_w, &window_h);
SDL_RenderGetViewport(renderer, &viewport);
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
for (i = 0; i < num_lines; ++i) {
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
if (i == -1) {
SDL_RenderDrawLine(renderer, 0, 0, window_w - 1, window_h - 1);
SDL_RenderDrawLine(renderer, 0, window_h - 1, window_w - 1, 0);
SDL_RenderDrawLine(renderer, 0, window_h / 2, window_w - 1, window_h / 2);
SDL_RenderDrawLine(renderer, window_w / 2, 0, window_w / 2, window_h - 1);
SDL_RenderDrawLine(renderer, 0, 0, viewport.w - 1, viewport.h - 1);
SDL_RenderDrawLine(renderer, 0, viewport.h - 1, viewport.w - 1, 0);
SDL_RenderDrawLine(renderer, 0, viewport.h / 2, viewport.w - 1, viewport.h / 2);
SDL_RenderDrawLine(renderer, viewport.w / 2, 0, viewport.w / 2, viewport.h - 1);
} else {
SDL_RenderDrawLine(renderer, lines[i].x, lines[i].y, lines[i].w, lines[i].h);
}
@@ -135,27 +135,18 @@ add_rect(int x1, int y1, int x2, int y2)
}
static void
DrawRects(SDL_Window * window, SDL_Renderer * renderer)
DrawRects(SDL_Renderer * renderer)
{
int i;
int window_w, window_h;
/* Query the sizes */
SDL_GetWindowSize(window, &window_w, &window_h);
for (i = 0; i < num_rects; ++i) {
SDL_SetRenderDrawColor(renderer, 255, 127, 0, 255);
SDL_RenderFillRect(renderer, &rects[i]);
}
SDL_SetRenderDrawColor(renderer, 255, 127, 0, 255);
SDL_RenderFillRects(renderer, rects, num_rects);
}
static void
DrawRectLineIntersections(SDL_Window * window, SDL_Renderer * renderer)
DrawRectLineIntersections(SDL_Renderer * renderer)
{
int i, j, window_w, window_h;
int i, j;
/* Query the sizes */
SDL_GetWindowSize(window, &window_w, &window_h);
SDL_SetRenderDrawColor(renderer, 0, 255, 55, 255);
for (i = 0; i < num_rects; i++)
for (j = 0; j < num_lines; j++) {
@@ -169,22 +160,22 @@ DrawRectLineIntersections(SDL_Window * window, SDL_Renderer * renderer)
y2 = lines[j].h;
if (SDL_IntersectRectAndLine(&r, &x1, &y1, &x2, &y2)) {
SDL_SetRenderDrawColor(renderer, 0, 255, 55, 255);
SDL_RenderDrawLine(renderer, x1, y1, x2, y2);
}
}
}
static void
DrawRectRectIntersections(SDL_Window * window, SDL_Renderer * renderer)
DrawRectRectIntersections(SDL_Renderer * renderer)
{
int i, j;
SDL_SetRenderDrawColor(renderer, 255, 200, 0, 255);
for (i = 0; i < num_rects; i++)
for (j = i + 1; j < num_rects; j++) {
SDL_Rect r;
if (SDL_IntersectRect(&rects[i], &rects[j], &r)) {
SDL_SetRenderDrawColor(renderer, 255, 200, 0, 255);
SDL_RenderFillRect(renderer, &r);
}
}
@@ -310,11 +301,11 @@ main(int argc, char *argv[])
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
DrawRects(state->windows[i], renderer);
DrawPoints(state->windows[i], renderer);
DrawRectRectIntersections(state->windows[i], renderer);
DrawLines(state->windows[i], renderer);
DrawRectLineIntersections(state->windows[i], renderer);
DrawRects(renderer);
DrawPoints(renderer);
DrawRectRectIntersections(renderer);
DrawLines(renderer);
DrawRectLineIntersections(renderer);
SDL_RenderPresent(renderer);
}