64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
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#include "camera.h"
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#include "render_bundle.h"
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#include "app.h"
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#include "util/vector.h"
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#include "util/assert.h"
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#include <stdio.h>
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#include <math.h>
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#include <easyx.h>
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namespace {
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vector_Vector *buff;
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}
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extern "C" void render_DrawPrimitiveW(App *app, render_Primitive *p, Vec2 offset) {
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if (buff == NULL)
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buff = vector_Create(sizeof(POINT));
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vector_Clear(buff);
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// Construct the points in screen space
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for (int i = 0; i < vector_Size(p->points); i++) {
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Vec2 realpos = vec2_Add(*((Vec2 *)vector_At(p->points, i)), offset);
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Vec2 screenpos;
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if (!app->camera) {
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// Really weird
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fprintf(stderr, "[WARN][render_DrawPrimitiveW] called without a Camera system\n");
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screenpos = realpos;
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} else
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screenpos = camera_TransformVec2(app->camera, realpos);
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// Round the screen position to ints
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POINT rounded;
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rounded.x = (LONG)round(screenpos.x);
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rounded.y = (LONG)round(screenpos.y);
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vector_Push(buff, &rounded);
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}
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// Set the colors
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setlinecolor(p->fg);
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setfillcolor(p->fg);
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setbkcolor(p->bg);
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// Draw the converted primitive
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switch (p->type) {
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case render_Lines:
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if (vector_Size(buff) % 2 != 0)
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fprintf(stderr, "[WARN][render_DrawPrimitiveW] render_Lines drawed odd numbers of points");
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for (int i = 0; i < vector_Size(buff); i += 2) {
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POINT p0 = *(POINT *)vector_At(buff, i);
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POINT p1 = *(POINT *)vector_At(buff, i + 1);
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line(p0.x, p0.y, p1.x, p1.y);
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}
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break;
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case render_LineStrip:
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polyline((POINT *)vector_Data(buff), vector_Size(buff));
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break;
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case render_Polygon:
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fillpolygon((POINT *)vector_Data(buff), vector_Size(buff));
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break;
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}
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}
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